18206886957 has 16 divisors (see below), whose sum is σ = 28267297920. Its totient is φ = 10207634112.

The previous prime is 18206886937. The next prime is 18206886989. The reversal of 18206886957 is 75968860281.

It is not a de Polignac number, because 18206886957 - 2⁷ = 18206886829 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18206886957.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18206886937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8178082 + ... + 8180307.

It is an arithmetic number, because the mean of its divisors is an integer number (1766706120).

Almost surely, 2^18206886957 is an apocalyptic number.

It is an amenable number.

18206886957 is a deficient number, since it is larger than the sum of its proper divisors (10060410963).

18206886957 is a wasteful number, since it uses less digits than its factorization.

18206886957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16358452.

The product of its (nonzero) digits is 11612160, while the sum is 60.

The spelling of 18206886957 in words is "eighteen billion, two hundred six million, eight hundred eighty-six thousand, nine hundred fifty-seven".